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The precautions of pollution(1)
- Jun 15, 2018 -

In the design of substations, the site should be kept away from various sources of pollution, especially chemical plants, fertilizer plants, and metallurgical plants. The site should be on the upwind side of a variety of sources of prevailing wind direction. The selection of the creepage distance between the insulator and the external insulation of the electrical equipment shall be determined according to the pollution level delineated by the nature and severity of the pollution of the substation. For severely polluted areas, indoor power distribution devices or gas-insulated metal-enclosed appliances can be used; for indoor power distribution devices located in wet areas, the creepage distance of electrical porcelain external insulation should be appropriately increased.



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